Hydropneumatic pump.



I. J. EMENY;

HYDROPNEUMATIG PUMP.

APPLIOATION FILED SEPT. 1, 1000.

Patented Mar.22, 1910.

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FREDERICK J. EMENY, OF SALEM, OHIO, ASSIGNOR TO THE DEMING COMPANY, OF SALEM, OHIO, A CORPORATION OF OHIO.

HYDROPNEUMATIC PUMP.

Specification of Letters Patent.

Application filed September 1, 1909.

To all whom it may concern:

Be it known that I, FREDERICK J. EMENY, a citizen of the United States, residing at Salem, in the county of Oolumbiana and State of Ohio, have invented certain new and useful Improvements in Hydropneumatic Pumps; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will onable others skilled in the art to which it appertains to make and use the same.

My invention relates to pumps and pumping apparatus, but has reference more particularly to pumps of the hydropneumatic class, and with still greater particularity to impgovements contained within the pump hea It has for one object the production of superior means for simultaneously pumping both air and water to a suitable tank or other sealed receptacle for subsequent distribution, under pressure, to various points of utilization throughout the supply system.

As a further object this invention contemplates a reduction and simplification of the necessary elements for accomplishing the object aforesaid, and provides also a more reliable and efficient service generally than heretofore obtained.

The invention will be hereinafter particularly described and pointed out in the claims following.

In the accompanying drawings which form part of this ap lication for Letters Patent, and whereon like reference characters indicate corresponding parts in the several views: Figure 1 is a longitudinal central vertical section partly in side elevation of all operative parts of the invention,

including a pump head, an Artesian well cylinder, and intermediate connections, Fig. 2 is an enlarged longitudinal central section of pump head and its within contained air pumping mechanism, and Fig. 3 is a transverse horizontal section taken on the line 3-3, Fig. 2.

Reference being had to the drawings and numerals thereon, 1 indicates a pump head,

in the present illustrations shown as of substantiall cylindrical form having top and bottom anges 2, 3, respectively, and in any 1 event provided with a flanged outlet 4: at

one side, to which is bolted a screw-threaded discharge connection 5, the hollow interior 6 of said head communicating directly with said outlet 1 to constitute a common discharge passage for water and air as will later appear. To the upper flange 2 of pump head 1 is bolted a closure or cover 7, between which and the head proper is interposed a packing 'asket 8 which is consequently of the bolted type; while, as best shown by Fig. 2, the outer surface of said cover 7 is depressed as at 9 forming a pocket for collecting leakage, and is tapped as at 10 by a suitable drip outlet. The cover 7 moreover, is tapped centrally as at 11 and depending therefrom in screw-threaded connection is an air pumpin chamber or cylinder 12 preferably forme of seamless brass tubing. At its lower end said cylinder 12 is equipped with a stufiing box 13 serving also as a cylinder head, and as a pump or piston rod guide; a follower 14. is screwed into the flanged extremity of said stufling box; and, interposed between said box and follower is a flexible-packing 15 firmly retained by its horizontal flanges 16, and having a depending cylindrical body tapered upon its outer surface as at 17, to perform the additional function of a check valve, as will later ap ear.

Reciprocal y and centrally mounted with relation to the air pumping cylinder 12 is a plunger 18 having a (iameter closely approximating the internal diameter of said cylinder 12, and depending therefrom is a piston rod 19 of reduced dlameter finding a guide bearing in the stufling box 13 aforesaid. At the intersection of said members 18-19 is formed a shoulder 20 beneath which is clamped the horizontal flange of an inverted cupacking or valvular plunger head 21 secure by agency of a nut 22, threaded upon a slight enlargement 23, at the upper end of the piston rod 19. And, it will be particularly noted that the last named ac ring or valvular plunger head 21, also as a flexible cylindrical depending tapering body, the taper 24 in this instance, however, bein upon its inner surface, but nevertheless a apted to perform the double function of a packing or a check valve according to the direction of reciprocation.

Directly beneath the pump head 1 is a pipe or line of pipe 25 provided at its upper end with an annular horizontal flange 26 by means of which it is bolted to flange 3 of the pump head, its under side resting upon a suitable platform or bed (not shown) at the mouth of a well. The said. piston rod 19 may be either hollow or solid and of any suitable material, it may also if desired, extend throughout the entire length of pipe 25 into the well cylinder or working barrel 27 of the pump; but by preference there is interposed a sucker-rod 28 of wood having suitable internal and external screw threaded couplings 2930 respectively, by agency whereof it is connected to said piston rod 19 at one end, and to a suitable valved pump piston such as 31 at its opposite or lowermost end. Below said pump piston 31 and at the lower extremity of pump cylinder 27 is located a foot valve 32 of. any approved form and construction, while to the end of said cylinder or working barrel is aflixed the usual bottom attachment 33 threaded to provide for a suction pipe or strainer when desired.

This being a description of my invention its use and operation may be briefly set forth as follows: Vhile applicable to wells of any depth and capacity the hereinbefore described pumping apparatus is intended primarily for deep Artesian wells, and for use in connection with power as distinguished from manually operating means. Presuming the working barrel 27 to be submerged at the bottom of well, and the usual pump piston, such as 31 and foot valve such as 32 to be properly assembled in operative relation, power now applied to the upper end of plunger 18 imparts thereto a vertical reciprocatory movement by agency whereof water is elevated, in the usual and well un-- derstood manner, from the depths of the well via connecting pipe 25, and discharge passage 6t, to an air tight storage tank (not shown). During these repeated operations and at all times when pumping against pressure, upon each upstroke of the pump piston 31, the packing 15 is compressed or flexed circumferentially against the ascendin piston rod 19 to pack it against the inrush 0 water from pipe 25, such automatic packing being invariably effected by water pressure upon the exterior of the tapering side walls 17 of said hat shaped packing. During the same upstroke referred to the upper cup packing or valvular plunger head 21. secured beneath the enlarged end of plunger 18, while traversing the length of the air pumping cylinder 12, naturally tends to rarefy the air contained therein; but, to fill such space there is an inrush of air from the upper open end of cylinder 12 past packing 21 now serving as a valve to permit such passage, so that at the completion of.each upstroke cylinder 12 is into the water and discharged with it at each complete stroke of the pump, and. in like manner the operation 18 continued, these members 15 and 21 serving alternately as a packing or a valve as occaslon requires.

This being a description of my invention in its preferred form of construction, it will be noted that various changes in the arrangement, combination, and proportion of parts may be made and substituted for those herein shown and described without departing from the spirit of my invention, which will now be set forth in the following claims:

1. A hydropneumatic pump head having a discharge passage therethrough, in combination with an air pumping cylinder surrounded by said head and open to the atmosphere at one end, a reciprocatory plunger in said cylinder, and a plunger head adapted to automatically expand and contract alternately with each stroke of the plunger.

2. A hydropneumatic pump head having a discharge passage therethrough, in combination with an air pumping cylinder surrounded by said head and open to the atmosphere above, a reciprocatory plunger in said cylinder, and a plunger head adapted to automatically expand and contract alternately with each stroke of the plunger.

3. A hydropneumatic pump head having a discharge passage therethrough, in combination with an air pumping cylinder surrounded by said head and open to the atmosphere at one end, a valved head for the opposite end of said cylinder, a reciprocatory plunger in said cylinder, and a plunger head adapted to automatically expand and contract alternately with each stroke of the plunger.

1. A hydropneumatic pump head having a discharge passage therethrough, in combination with an air pumping cylinder located within said passage and open to the atmosphere at one end, a head for the opposite end of said cylinder provided with a check valve, a reciprocatory plunger in said cylinder, and a flexible plunger head adapted to automatically expand and contract circumferentially with each alternate stroke of the plunger.

5. A hydropneumatic pump head having a discharge passage therethrough, in comically expand and contract circumferentially bination with an air pumping cylinder dewith eac alternate stroke of the plunger. 10

pending from and opening to the atmos- In testimony whereof I afiix my signature, phere through the upper end of said head, in presence of two subscribing wltnesses.

5 a reciprocatory plunger in said cylinder, a FREDERICK J. EMENY.

head for the lower end of said cylinder pro- Witnesses: vided with a check delivery valve, and a R. R. MILLER,

flexible plunger head adaptedto automat- W; G. BUTLER. 

